Carbureter.



A. B. BROWNS.

CARBURETER.

APPLICATION nun JAN. 15. 1014.

Patented Dec. 8, 1914.

2 SHEETS-$8331 1.

A. B. BROWNE.

CARBURBTER.

APYLICAIION FILED JAN. 15. 1914,

Patented Dec. 8. 1914.

\\ FAN NWN metal and having its lower edge 7 engaged wit a shoulder 8 around the outside of the air tube 2. Around the inner cup 6 is an outer cup 9 larger in dimensions than the inner cup and having a lower flange 10 be- :wccn which and the shoulder 8 is located a spacing ring 11, the vertical wall 12 of inch is formed at intervals with openings 1 through which air may pass to the air in t Y 9. This outer shell is clamped to the of the ring by a. locl: nut l-l aded onto the lower end oi the an tube Fm also receives a metal cup 15. The

i' shell is provided with an inlet opening it from which preheated air may be re- ;d from the engine.

.Zit one side of the dome 3 is an opening 17 for connection with the supplyof fuel. From this opening a passage 18 leads to the rescm oir termed by the inner cup 6, the passage being adapted to he closed by a valve .21 E20 :ulaptcd to be moved by a float 21 'i ed. as zit 22 to the dome, and so that as the lloat drops the valve will open, and as float rises the valve will be closed. W'thin the air inlet tube is a centrally :irra "ed well 23 which communicates with the ]'Q.;Ql"i(')'ll 19 by a channel 24: formed in one of the arms formed as an integral part of the air tube .2 and supporting the well 3. Within the well is a piston 26 which its the interior of the well 23 only close enough so that the device acts as a h pot in. retarding vibrations, or pulsai'i of the hollow valve stem 27 which projects upward through the upper end of the well and which carries I 'alvc 28. valve is shaped that thepassage between i and the walls of theupper end of the air tube 2 and dome 3 ishsseutially venturishaped presenting the most efficient angle oi approach and discharge to and from a i-tricted throat/ Preferably the valve noes not fully close the upper end of the air .let tube but afiords a slight area. of a-"lui ion even when in the extreme down i. The'valvc 28 is provided witha s of raiilial openings 29 connecting at inner ends with'the interior of the foe h llow valve stem 27 which stem has an the lower end of the valve sent a pin or rod 31 may extend by which the valve seat may in turned so as to raise or lower the seat with relation to the needle valve. Within This . the cup. l5 and around the lower end of the valve seat 1s a stuffing box By an ranging the needle valve and its seat so as to regulate the supply of fuel to the well expansion, so that as the fuel becomes heat ed. the area of fuel admission through the valve seat 31 is decreased by the expansion and consequent lengthening of the valve stem 27 and the needle valve 30. By this means I eiicct an automatic compensation for the decreasing viscosity of the fuel as. the temperature rises.

l reterably and as herein shown, within the lower end oil. the well 23 and above the valve seat 31', I locate an electrical resist ance coil 36 one end of which is grounded with the wall of the well, and the other end passing downward through the wallsof the valve seat 31 to a binding post 37 insulated i'rozn the carbureter body which is also prorider] with a binding post 38 by which c0nthe coil.

' The carbureter being connected to the engine and hot air connection being made as indicated, fuel is admitted through the opening 17 into the reservoir 19 from which it flows through the passage 24, port 32, and. valve seat 81 to the well 23, it being understood that when a predetermined quantity of fuel has entered the reservoir the float 21 will rise and lift the valve 20 so as to cut off further supply. \Vhen the throttle 4: is open and the engine started,thc suctionof the engine creates a vacuum. in the dome 3 and the velocity 0 the in -rushi'ng air through the restricted area between the valve 28 and the walls of the air tube 2 inspirates the fuel. from the well through the hollow valve stem 27 and holes 29, the fuel becoming highly atomized. As the suction increases the valve lifts further, admitting a greater quantity of air, and at the same time withdrawing the needle 30 from the valve seat 31 increasing the area of the latter and affording a proportional increased ;l'iow of fuel. Preheated air entering through the opening 16 into the chamber formed between the two cups passes through the ring 11 and is drawn into the air tube 2 by the suction of the engine, and this heated air coming in contact with the 1,12o,iee 8 inner cup 6 beats the fuel to such a degree that it rapidlychanges to vapor when drawn into the air, and at the same time this air in giving off its heal: to the fuel Within the cup or reservoir is cooled to a certain extent before it enters the air tube, so that a greater tion of fuel within the Well, forum What, imghl he called a pruning charge s'ul'helenaf lo start the engine, Without lllimm-e-iassilzy of heating the entire :ummut of l'uel in. the r.. servoir "which would-take an impraclzical length of, 'tii'ne with such eurrcnlv as is ueually available. "llhe engine, once started, soon preheals the air so as lzo heat the larger quarmity of fuel contained in the reservoir.

ll 'ith my improve-cl device, aucl particw larly by my method. of enualoying preheated air to heat the :r'eel, 1 am cnahlerl to use with. great ellicicncy a low grade fuel, aucl at all times regulate the .l'low' o luel in direct proportion to the low oil? air.

1'. claimz- A earhureter having its air inlet pas-- 2 a {.je ohiuralecl by valve the operative walls of whieh are oi? a different angle from those ol. its seal, id walls forming. with said seal a constricted opening of the sairl air inlet passage, "essentially venturi sl'ia pcrl in section, said valve being provided with means for discharging fuel at the point greatest constriction of the air inlct pasexlgencling into 2. A carhureler having an air inlet pas sage oluturalieri hyan air valve, the OPQPILUVfi Zeal; a c fv'lwwalls of which form with its seat a constrieb ecl opening of said air inlet passage essentially venturi shaped in section, said valve provided with a stem having a passage, a tapered nccllc operutivoly connected to said air valve, a stationary compartment into which, said valve stem extends: and into which the flow of fuel controlled by said tapered needle and from which the fuel is drawn through the passage in the air valve the valleof said eomparhnenl; coacting with the elem oi the said air valve and exerting u (lmnpcuiug elleel; on vibrations imparted to said air vain l; A. curhmmmhaving an air inlet passageobtmatml by an air valve ocmbmcd with a jaelcelml fuel reee 'voir, a well, a fuel passage lrelgu'ren Sillll rrecrvoir and said. well, a tapered .urrllle connected to and ac lualiml. l'rv Hitlll air valve, said needle 10V- mung the rllfrvtive area of Slllil fuel passage, uahl air valve provided with a elem which enters will Well and eo-aels; with the walls thcreo'l to dampen vilu'aliol'ls imparted to said. air valvu, said stem and said air "alve formed ivilh eoniurcling pasegagrs lhrough which fuel la withdrawn from said well and dischargcul iulo r airl air inlet passage at the point bl gr aicsi; constriction ol said air inlei; passa A mrlsurcter having an air iulei. passage opening: into a chamber, combined with inner and outer shells lived with relation to the walls of eaicl. air iulol passage in such a manner as in aiioril emails of communicalion helweeu the were :l oruuul between said shells will will air iulcl; mileage, a fuel res LHHlll l'm'mvl'l lay will lune ehell, a. Well, a passage for l'uol lwlween roiil reservoir uml said lil'lll, a valve seat tl'lrough which 'i'uel.i:-; ailmitlml Lo said well, a valve stem said. well auleoacting with Lhc Walls of well to larnpen. vibrations imparted t. said. elem, a ncccllc valve carr'ieil by sale. valve stem and. co-acting with.

Sfiltl valve Sirli'll to regulate the simply of fuel. entering :iillll well, a valve eccureil to said valve slexu, sum lve calcting with the walls of serial u' a i. age to regulate lfhe quantity oi. air leer-111g; the eaiil chamber, aml a passage through said valve and stem whm'eby fuel is clrawn from mid. Well arul causell to min: with said air.

In testimony wli. col, I have eigned this speeification in the presence of two suhsrcriloing witnesses. v

A RTH U11 LEN JAMlri' BROWNE.

Wi messes Funmzzuic (l. Kamila, M. P. Nrouow. 

